Endlessly produces Youtube videos of reviews of The Last Jedi with a dude standing in front of his bookcase of movies talking about how the film ruined his life. These videos would be syphoned as ads that you couldn’t skip, and they would flood your mentions. You’d be recommended one no matter what you searched, and even the Vine compilations you love to endlessly watch would be interrupted with ads featuring them.

It just randomly misses one letter every few words typed so you have to correct hundreds of typos.
That or do the annoying thing some applications do when starting up where they keep focusing on the window as you’re trying to do stuff in a different window.

Detects things you are trying to click on such as buttons, files, menu items, etc. and causes the mouse cursor to swerve in a random direction at the last second before you click, while playing a slide whistle sound effect.